HADOOP-10543. RemoteException's unwrapRemoteException method failed for PathIOException. Contributed by Yongjun Zhang.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1591182 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -102,6 +102,9 @@ Release 2.5.0 - UNRELEASED
     HADOOP-10547. Give SaslPropertiesResolver.getDefaultProperties() public
     scope. (Benoy Antony via Arpit Agarwal)
 
+    HADOOP-10543. RemoteException's unwrapRemoteException method failed for
+    PathIOException. (Yongjun Zhang via atm)
+
 Release 2.4.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/PathIOException.java

@@ -40,7 +40,7 @@ public class PathIOException extends IOException {
    *  @param path for the exception
    */
   public PathIOException(String path) {
-    this(path, EIO, null);
+    this(path, EIO);
   }
 
   /**
@@ -59,7 +59,8 @@ public class PathIOException extends IOException {
    * @param error custom string to use an the error text
    */
   public PathIOException(String path, String error) {
-    this(path, error, null);
+    super(error);
+    this.path = path;
   }
 
   protected PathIOException(String path, String error, Throwable cause) {

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/shell/TestPathExceptions.java

@@ -19,11 +19,13 @@
 package org.apache.hadoop.fs.shell;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 import java.io.IOException;
 
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.PathIOException;
+import org.apache.hadoop.ipc.RemoteException;
 import org.junit.Test;
 
 public class TestPathExceptions {
@@ -52,5 +54,25 @@ public class TestPathExceptions {
     assertEquals(new Path(path), pe.getPath());
     assertEquals("`" + path + "': " + error, pe.getMessage());
   }
-  
+
+  @Test
+  public void testRemoteExceptionUnwrap() throws Exception {
+    PathIOException pe;
+    RemoteException re;
+    IOException ie;
+    
+    pe = new PathIOException(path);
+    re = new RemoteException(PathIOException.class.getName(), "test constructor1");
+    ie = re.unwrapRemoteException();
+    assertTrue(ie instanceof PathIOException);
+    ie = re.unwrapRemoteException(PathIOException.class);
+    assertTrue(ie instanceof PathIOException);
+
+    pe = new PathIOException(path, "constructor2");
+    re = new RemoteException(PathIOException.class.getName(), "test constructor2");
+    ie = re.unwrapRemoteException();
+    assertTrue(ie instanceof PathIOException);
+    ie = re.unwrapRemoteException(PathIOException.class);
+    assertTrue(ie instanceof PathIOException);    
+  }
 }